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Download Whiskey is for drinking and water is for fighting
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Cnidarians • Coral • Sea anemones • Jellyfish • Distinguishing characteristic – stinging tentacles Corals Sea Anemones Jellyfish Body Forms • Polyp (coral, anemones) ♦ Cylinder, mouth at top ♦ Sessile • Medusa (jellyfish) ♦ Umbrella-shaped ♦ Free-swimming Body Structure • 2 cell layers – ectoderm, endoderm • Mesoglea – middle layer (gel-like) • Gastrovascular cavity Body Symmetry • Radial ♦ Capture food from all directions Body Systems • Skeletal ♦ None – hydrostatic pressure • Nervous – nerve net, no brain • Muscular – cells in bands ♦ Jellyfish propulsion Nerve Net Stinging Cells (Cnidocytes) Feeding • Tentacles sting and grasp prey • Into GV cavity via mouth • Enzyme secreted • Digestion completed by cells Reproduction • Sexual and asexual • Budding • Regeneration Colonies • Buds don’t break off – animals becomes branched colony Portuguese Man-of War • Colony – medusae and polyps Organ Pipe Coral Deerhorn Coral Brownstem Coral Lace Coral Northern Star Coral Northern Star Coral Coral Lab
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